000-- to transfer the data into differnt format: binary, decimal, hexadecimal， octal
Running result:
By refering :
a -- the difference between os._exit() sys.exit() exit()
http://blog.csdn.net/taohuaxinmu123/article/details/39669495
b-- print differnt format
http://www.pythonclub.org/python-basic/print
http://bbs.fishc.com/forum.php?mod=viewthread&tid=39140&extra=page%3D1%26filter%3Dtypeid%26typeid%3D403
001-- differnt format functions
002-- usage of format function
